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The Lower Potomac

The Potomac Estuary

Mount Vernon to Anacostia River

Mall Area

Georgetown to Great Falls

Potomac Piedmont

Upper Potomac

The North Branch

Boat Ramps

Monitoring Sites

Bridges and Ferries

Cruises and Charters

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Foundry Branch

D.C. Tributary

Foundry Branch starts in northwest Washington, D.C., and flows underground (through a large pipe) until it reaches Glover-Archbold Park. It is named for the Columbia Foundry established in 1799 by Henry Foxhall.

Suggested Links

Contact Information
D.C. Department of the Environment

DC

Website